linux-kernel - Re: [RFC] ARM: OMAP2+: omap_device: add pinctrl handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130625065811.GZ5523@atomide.com>
Date:	Mon, 24 Jun 2013 23:58:11 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Grygorii Strashko <grygorii.strashko@...com>,
	Kevin Hilman <khilman@...aro.org>,
	Hebbar Gururaja <gururaja.hebbar@...com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Linux-OMAP <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stephen Warren <swarren@...dotorg.org>
Subject: Re: [RFC] ARM: OMAP2+: omap_device: add pinctrl handling

* Linus Walleij <linus.walleij@...aro.org> [130624 05:13]:
> On Fri, Jun 21, 2013 at 5:03 PM, Grygorii Strashko
> <grygorii.strashko@...com> wrote:
> 
> > Hence, add pinctrl handling in omap_device core:
> > 1) on PM runtime resume
> > - switch pinctrl state to "default" (todo: "active")
> > 2) on PM runtime suspend
> > - switch pinctrl state to "idle"
> > 3) during system wide suspend
> > - switch pinctrl state to "sleep" or "idle" if omap_device core disables device
> > - switch pinctrl state to "sleep" if device is disabled already

Do you need a separate setting for "idle" and "sleep", or are
they the same?

> > 4) during system wide resume
> > - switch pinctrl state to "default" (todo: "active") if omap_device core has
> >   disabled  device during suspend
> > - switch pinctrl state to "idle" if device was already disabled before suspend
> 
> I don't understand step 4.
> 
> I get the creeps about whether the system is runtime suspended
> or runtime resumed when we come to resume proper, so I need
> Kevin to have a look at this.
> 
> Apart from that it looks good.
> 
> Stephen and Tony are trying to figure out the details of whether "active"
> is necessary or not in a related thread I think.

Yes we should have that sorted out over next few weeks, so let's
just wait a little while on all these dynamic remuxing patches
to avoid churn.

Regards,

Tony
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/